%%
%% The LaTeX Companion, 3ed
%%
%% Example 6-9-5 on page I-501 in "Automatic row numbering and referencing".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

%StartShownPreambleCommands
\usepackage{keyvaltable}
\NewKeyValTable{autonum}{ text: head=\textbf{Text};
                          line: head=\ , default=\S\thekvtRow }
%StopShownPreambleCommands

\begin{document}
\begin{KeyValTable}{autonum}
  \Row{text=First row} \Row{text=Second row, line=\thekvtRow*}
  \Row[uncounted]{text=Interlude, line=--} \Row{text=Last row}
\end{KeyValTable}
\end{document}
